Number of partitions of 5n into exactly n parts.

Terms

a(0) =1a(1) =1a(2) =5a(3) =19a(4) =64a(5) =192a(6) =532a(7) =1367a(8) =3319a(9) =7657a(10) =16928a(11) =36043a(12) =74287a(13) =148702a(14) =290071a(15) =552767a(16) =1031391a(17) =1887776a(18) =3395084a(19) =6007963a(20) =10474462a(21) =18010859a(22) =30574655a(23) =51284587a(24) =85064661a(25) =139620591a(26) =226914505a(27) =365371100a(28) =583164222a(29) =923075291